Peptide map analysis of normal plasma and platelet factor VIII antigen Academic Article Article uri icon


MeSH Major

  • Ethnic Groups
  • Malaria
  • Qualitative Research
  • Residence Characteristics
  • Social Marginalization


  • Factor VIII antigen from platelet intracellular granules was immunoprecipitated using a monospecific rabbit antibody to normal plasma factor VIII antigen. The factor VIII antigen in the immunoprecipitate was isolated on sodium dodecyl sulfate polyacrylamide gels, radiolabeled with 125I, trypsinized, and subjected to peptide mapping using two dimensional high voltage electrophoresis and thin layer chromatography. The platelet protein was compared to purified plasma factor VIII antigen. The two dimensional tryptic 125I peptide map of platelet granule factor VIII antigen was similar but not identical to the plasma factor VIII antigen peptide map. The platelet and plasma proteins shared approximately 34 radioactive peptide spots. Seven plasma factor VIII antigen peptides were not detected in platelet factor VIII antigen. The reason for the structural differences of plasma and platelet granule factor VIII antigen are unknown. The possibility is raised that proteolysis has altered the platelet protein in vitro. It is also possible that factor VIII antigen synthesized by megakaryocytes differs from the plasma protein. © 1980.

publication date

  • February 27, 1980



  • Academic Article


Digital Object Identifier (DOI)

  • 10.1016/0006-291X(80)90415-5

PubMed ID

  • 6768359

Additional Document Info

start page

  • 1208

end page

  • 14


  • 92


  • 4